fire grate segment

例句：

1. 1. The fire grate segment iscrucial for maintaining the combustion efficiencyof the furnace.
   火栅段对于保持炉膛燃烧效率至关重要。
2. 2. Theengineer carefully inspected thefire grate segment to ensureit was in good condition.
   工程师仔细检查了火栅段，确保其处于良好状态。
3. 3. Thefire grate segment playsa vital role in controlling thetemperature and preventing overheating.
   火栅段在控制温度和防止过热方面起着重要作用。